mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
gleeda
141 lines
4.5 KiB
Python
141 lines
4.5 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License Version 2 as
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# published by the Free Software Foundation. You may not use, modify or
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# distribute this program under any other version of the GNU General
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# Public License.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0
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@contact: atcuno@gmail.com
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@organization:
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"""
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import struct
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from operator import attrgetter
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import volatility.obj as obj
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import volatility.debug as debug
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import volatility.addrspace as addrspace
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import volatility.plugins.linux.common as linux_common
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import volatility.plugins.linux.pslist as linux_pslist
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from volatility.renderers import TreeGrid
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bash_hash_vtypes_32 = {
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'_pathdata' : [ 8, {
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'path' : [0x0, ['pointer', ['String', dict(length = 1024)]]],
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'flags': [0x4, ['int']],
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}],
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'bucket_contents' : [ 20, {
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'next' : [0x0, ['pointer', ['bucket_contents']]],
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'key' : [0x4, ['pointer', ['String', dict(length = 1024)]]],
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'data' : [0x8, ['pointer', ['_pathdata']]],
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'times_found' : [16, ['int']],
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}],
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'_bash_hash_table': [ 0xc, {
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'bucket_array': [0x0, ['pointer', ['bucket_contents']]],
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'nbuckets': [0x4, ['int']],
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'nentries': [0x8, ['int']],
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}],
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}
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bash_hash_vtypes_64 = {
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'_pathdata' : [ 12, {
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'path' : [0x0, ['pointer', ['String', dict(length = 1024)]]],
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'flags': [0x8, ['int']],
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}],
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'bucket_contents' : [ 32, {
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'next' : [0, ['pointer', ['bucket_contents']]],
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'key' : [8, ['pointer', ['String', dict(length = 1024)]]],
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'data' : [16, ['pointer', ['_pathdata']]],
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'times_found' : [28, ['int']],
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}],
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'_bash_hash_table': [ 16, {
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'bucket_array': [0, ['pointer', ['bucket_contents']]],
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'nbuckets': [8, ['int']],
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'nentries': [12, ['int']],
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}],
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}
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class _bash_hash_table(obj.CType):
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def is_valid(self):
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if (not obj.CType.is_valid(self) or
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not self.bucket_array.is_valid() or
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not self.nbuckets == 64 or
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not self.nentries > 1):
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return False
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return True
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class BashHashTypes(obj.ProfileModification):
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conditions = {"os" : lambda x : x in ["linux"]}
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def modification(self, profile):
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if profile.metadata.get('memory_model', '32bit') == "32bit":
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profile.vtypes.update(bash_hash_vtypes_32)
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else:
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profile.vtypes.update(bash_hash_vtypes_64)
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profile.object_classes.update({"_bash_hash_table": _bash_hash_table})
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class linux_bash_hash(linux_pslist.linux_pslist):
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"""Recover bash hash table from bash process memory"""
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def __init__(self, config, *args, **kwargs):
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linux_pslist.linux_pslist.__init__(self, config, *args, **kwargs)
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self._config.add_option('SCAN_ALL', short_option = 'A', default = False, help = 'scan all processes, not just those named bash', action = 'store_true')
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def calculate(self):
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linux_common.set_plugin_members(self)
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tasks = linux_pslist.linux_pslist(self._config).calculate()
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for task in tasks:
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proc_as = task.get_process_address_space()
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# In cases when mm is an invalid pointer
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if not proc_as:
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continue
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# Do we scan everything or just /bin/bash instances?
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if not (self._config.SCAN_ALL or str(task.comm) == "bash"):
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continue
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for ent in task.bash_hash_entries():
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yield task, ent
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def unified_output(self, data):
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return TreeGrid([("Pid", int),
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("Name", str),
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("Hits", int),
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("Command", str),
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("Path", str)],
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self.generator(data))
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def generator(self, data):
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for task, bucket in data:
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yield (0, [int(task.pid), str(task.comm),
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int(bucket.times_found),
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str(bucket.key.dereference()),
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str(bucket.data.path.dereference())])
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